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How the Ocean Floor Got Filled with Riches

Video vocabulary

people

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US / 'pi:pl /

UK / ˈpipəl /

A1
  • noun
  • Persons sharing culture, country, background, etc.
  • Men, Women, Children

then

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US / ðen /

UK / ðɛn /

A1
  • adverb
  • A time that is not now
  • Following another thing in time or arrangement
  • Following on reasonably from what was just stated
  • At that time, not now

harden

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US / 'hɑ:dn /

UK / 'hɑ:rdn /

A2
  • verb
  • To make or become hard or firm

silver

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US / 'sɪlvə(r) /

UK / ˈsɪlvɚ /

A2
  • adjecitve
  • Being the shiny gray color of mercury
  • noun
  • Person's name
  • Shiny gray color
  • Near white color metal with high value
  • Objects made from silver, such as dishes, forks
  • verb
  • To coat something with a layer of silver
  • To polish silver objects to make them shine

sea

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US / /

UK / /

A1
  • noun
  • Very large group of people, similar-looking things
  • Large body of salty water with land around it

find

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US / faɪnd /

UK / faɪnd /

A1
  • noun
  • Object discovered by chance
  • Things that have been discovered from searching
  • verb
  • To become aware of something that is happening
  • To discover or meet by chance
  • To decide if someone is guilty of a crime, or not
  • To learn through study, research, or effort
  • To discover something by looking for it

current

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US / 'kʌrənt /

UK / ˈkɚrənt, ˈkʌr- /

A2
  • adjecitve
  • Happening or being in the present time
  • noun
  • Electricity flowing through wires
  • Movement of water in a river, or air in the sky

chimney

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US / 'tʃɪmnɪ /

UK / ˈtʃɪmni /

B2
  • noun
  • Part of a building through which smoke escapes

get

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US / ɡet /

UK / ɡɛt /

A1
  • verb
  • To become affected by illness or disease
  • To begin to feel or understand an emotion or idea
  • To send or bring someone or something home, etc.
  • To go somewhere to obtain something
  • To (cause to) do a particular thing
  • To obtain, receive or be given something
  • To currently have
  • To prepare for use
  • To understand something being said or read

cell

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US / sel /

UK / sɛl /

A2
  • noun
  • Smallest unit of living things in biology
  • Group of people - often from a secret organization
  • Prisoner's room in a jail
  • Shortened form of 'cellphone'

what

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US / wɒt /

UK / hwɑt, hwʌt, wɔt, wʌt,hwət, wət /

A1
  • pronoun
  • Thing or things that; the same kind as
  • Used to emphasize something you are about to say
  • adjecitve
  • Used to refer to a particular amount, or number
  • Used to place emphasis on a particular quality
  • adverb
  • To a certain degree
  • determiner
  • Question words used for asking for information
  • exclamation
  • Used to express excitement, shock, or surprise
  • Used to ask people to repeat something they said

tooth

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US / tu:θ /

UK / tuθ /

A1
  • noun
  • A sharp points on the edge of a machine or tool
  • Hard white things in the mouth, used to bite

alter

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US / ˈɔ:ltə(r) /

UK / ˈɔltɚ /

A2
  • verb
  • To change so (clothing) fits better

about

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US / ə'baʊt /

UK / əˈbaʊt /

A1
  • adverb
  • To be ready to; going to
  • Nearly; approximately; roughly
  • Near; next to; close to
  • In every direction; in the area of
  • preposition
  • Concerning or of (a topic)

plateau

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US / 'plætəʊ /

UK / plæˈto /

B2
  • noun
  • Flat land that is higher than the land around it
  • verb
  • To not increase or decrease; stay stable or stuck

latch

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US / lætʃ /

UK / lætʃ /

B2
  • noun
  • A (door lock)
  • verb
  • To tightly attach yourself to something

that

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US / ðæt /

UK / ðæt, ðət /

A1
  • adjecitve
  • The person or thing being talked about
  • Used to identify something both the speakers know
  • adverb
  • Used to reinforce adjectives and adverbs
  • To such a degree
  • conjunction
  • Used to connect a noun clause
  • Used to introduce an adverbial clause
  • Used to introduce a noun clause
  • determiner
  • Used as a noun to refer to something
  • pronoun
  • Referring an object far away
  • Used to refer to the relative pronoun ‘which’

enough

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US / ɪˈnʌf /

UK / ɪˈnʌf /

A1
  • adjecitve
  • Sufficient to answer the need
  • adverb
  • To a satisfactory degree
  • pronoun
  • Equal to what is needed; as much as required
  • Adequate number or amount

square

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US / skweə(r) /

UK / skwɛr /

A2
  • adjecitve
  • Being fair or honest
  • Multiply a number by itself e.g. 2x2 or 6x6
  • noun
  • Shape with 4 equal length sides and 4 equal angles
  • The result of multiplying Length by the width
  • Open public area in the middle of the town
  • verb
  • To make something balance or be equal
  • To multiply a number by itself, e.g. 2x2 or 6x8
  • To straighten the edge to form a four-sided shape

beneath

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US / bɪ'ni:θ /

UK / bɪˈniθ /

A2
  • preposition
  • Not worthy of you; not good enough for you
  • Under; In or to a lower position; below

precious

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US / 'preʃəs /

UK / ˈprɛʃəs /

B1
  • adjecitve
  • Having a youthful, cute, and pleasant appearance
  • Very little (time, money etc.)
  • Extremely loved and valued
  • Being very sensitive about something
  • Being of great value; highly prized

drag

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US / dræɡ /

UK / dræɡ /

A2
  • noun
  • Force of air pushing back against a plane car etc.
  • Boring or annoying thing/activity
  • verb
  • To reluctantly move or go somewhere
  • To feel that progress or time is moving slowly
  • To pull something heavy or difficult along the ground

first

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US / fɜ:st /

UK / fɚst /

A1
  • adjecitve
  • 1st; Coming before all others in time or place
  • noun
  • Something that has not happened before
  • Position of the winner of a competition

bacteria

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US / bæk'tɪərɪə /

UK / bækˈtɪriə /

B2
  • noun
  • The very small creatures that can cause disease

reaction

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US / rɪ'ækʃn /

UK / riˈækʃən /

A2
  • noun
  • Bodily response to a drug or something eaten
  • Feeling or action in response to something

iron

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US / ˈaɪən /

UK / ˈaɪərn /

B1
  • adjecitve
  • Being very tough, strong, and determined
  • noun
  • Heavy metal device heated to smooth clothes
  • Golf club with a metal head
  • Strong hard metal used to make steel
  • verb
  • To use a hot flat-based machine to smooth clothes

platinum

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US / ˈplætɪnəm /

UK / ˈplætnəm /

B2
  • adjecitve
  • Made from the silver metal platinum
  • noun
  • Very expensive silver-colored metal

offer

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US / 'ɒfə(r) /

UK / ˈɔfɚ, ˈɑfɚ /

A1
  • noun
  • Price you say you are willing to pay for something
  • Act of making a thing available to be accepted
  • verb
  • To suggest a price you are willing to pay
  • To give the opportunity to accept something
  • To say you are willing to do something
  • To give or say something as an act of worship

slowly

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US / ˈsləʊli /

UK / ˈsloʊli /

A1
  • adverb
  • In an unhurried or not speedy manner

example

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US / ɪgˈzɑ:mpl /

UK / ɪɡˈzæmpəl /

A1
  • noun
  • Thing, person which represents a category

number

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US / ˈnʌmbə(r) /

UK / ˈnʌmbɚ /

A1
  • noun
  • Symbols such as 1, 2, 56, 793
  • Particular song or dance performed during a show
  • Total quantity or amount of things
  • verb
  • To put numbers on things
  • To assign a sequence within a group, series, set
  • To claim to be part of a larger group, series, set

each

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US / i:tʃ /

UK / itʃ /

A1
  • determiner
  • Every one of two or more things
  • pronoun
  • Per one person or thing

watch

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US / wɒtʃ /

UK / wɑtʃ /

A1
  • noun
  • Period of time someone is responsible for guarding
  • Device you wear on your wrist that shows the time
  • Official warning statement, e.g. of bad weather
  • verb
  • To keep in check, manage, or control something
  • To look at something for entertainment, e.g. TV
  • To guard a place or people; protect child, etc.
  • To look at carefully to work out what is happening
  • To protect and care for someone or something

annual

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US / ˈænjuəl /

UK / ˈænjuəl /

A2
  • adjecitve
  • Happening once a year, or every year
  • noun
  • Book (in a series) released each year

like

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US / laɪk /

UK / laɪk /

A1
  • adjecitve
  • Being equal in status or kind to something else
  • Similar; the same
  • adverb
  • For example
  • preposition
  • Used as a filler; used to ad emphasis
  • In a way similar to the way something is done
  • Such as; for example
  • verb
  • To want to
  • To find something pleasing; to prefer something

glom

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US / ɡlɒm /

UK / ɡlɑːm /

A1
  • noun
  • Seize upon or latch onto something

nodule

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US / ˈnɒdju:l /

UK / ˈnɑ:dʒu:l /

A1
  • noun
  • Small, round raised part, protrusion

bottom

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US / 'bɒtəm /

UK / ˈbɑtəm /

A2
  • adjecitve
  • Concerning the part under something, e.g. a vase
  • noun
  • The part of your body you sit on
  • Lowest position, often in a company or contest
  • Lowest part of something; part on which it rests
  • Lowest level, part or point of an object
  • The part under something, e.g. a vase
  • verb
  • To hit the lowest part of something

during

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US / ˈdjʊərɪŋ /

UK / ˈdʊrɪŋ, ˈdjʊr- /

A1
  • preposition
  • At some point in the course of an event or thing

include

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US / ɪnˈklu:d /

UK / ɪnˈklud /

A1
  • verb
  • To make someone, something part of a group

sticky

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US / ˈstɪki /

UK / ˈstɪki /

B1
  • adjecitve
  • Easy to adhere or stick to other things
  • (Of weather/a day) uncomfortably hot and humid

compound

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US / 'kɒmpaʊnd /

UK / kɑmˈpaUnd /

B1
  • adjecitve
  • (Of a term) created by combining two or more words
  • noun
  • Series of buildings that are walled or fenced off
  • Chemical made up of several others
  • Closed walled area, as in a prison
  • Something formed by combining elements/parts
  • Term created by using two or more words together
  • verb
  • To pay interest on a loan including the interest
  • To make something from various parts or components
  • To make a mistake or problem worse

trap

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US / træp /

UK / træp /

A2
  • noun
  • Device used for catching animals
  • Vehicle pulled by a single horse
  • Area or hazard on a golf course
  • Someone's mouth
  • Uncomfortable event that is hard to escape
  • verb
  • To use a device to catch animals or people
  • To hold, e.g. a nerve, so that it cannot move
  • To catch or prevent someone from escaping
  • To trick someone
  • To put into a situation you can't escape from

computer

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US / kəmˈpju:tə(r) /

UK / kəmˈpjutɚ /

A1
  • noun
  • Machine for storing data, accessing the internet

much

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US / mʌtʃ /

UK / mʌtʃ /

A1
  • adjecitve
  • Very; to a high level or degree
  • adverb
  • A lot; large amount; a high degree of
  • Nearly; basically
  • On many occasions; often
  • noun
  • A large amount; a great quantity

though

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US / ðəu /

UK / ðo /

A1
  • adverb
  • Although, despite the fact that

cold

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US / kəʊld /

UK / kold /

A1
  • adjecitve
  • Having a very low temperature
  • Being unfriendly or lacking emotion
  • noun
  • Illness of sneezing, coughing, and a sore throat

black

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US / blæk /

UK / blæk /

A1
  • adjecitve
  • Color of the sky on a dark night
  • noun
  • A person with dark skin, often of African origin
  • Person's name
  • verb
  • To fill in something to make it a very dark color

through

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US / θru: /

UK / θru /

A2
  • adjecitve
  • having finished using or doing something
  • adverb
  • From the beginning of something until the end
  • preposition
  • Over, in, across an entire thing or place
  • Allowing you to pass between, or to
  • By a particular way or process; by the use of

subtly

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US / ˈsʌtli /

UK / ˈsəd(ə)li /

B1
  • adverb
  • In a way that is delicate or slight, but effective

treasure

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US / 'treʒə(r) /

UK / ˈtrɛʒɚ /

A2
  • noun
  • Valuable things collected, and often hidden
  • Someone or something that is worth a lot
  • verb
  • To value something you keep very much
  • To take great care of because you love/value it

since

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US / sɪns /

UK / sɪns /

A1
  • adverb
  • At a point before the present time
  • conjunction
  • For this reason; because
  • preposition
  • From the time in the past that

microbe

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US / ˈmaɪkrəʊb /

UK / ˈmaɪkroʊb /

C1
  • noun
  • Very small, microscopic, living thing

fully

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US / 'fʊlɪ /

UK / ˈfʊli /

A1
  • adverb
  • Completely or entirely

math

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US / mæθ /

UK / mæθ /

A2
  • noun
  • Study or science of numbers and shapes

manufacturing

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US / ˌmænjuˈfæktʃərɪŋ /

UK / ˌmænjəˈfæktʃərɪŋ /

A2
  • noun
  • The act of making things in factories
  • verb
  • To produce large numbers of products in a factory
  • To create a story or explanation that is not true

special

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US / 'speʃl /

UK / ˈspɛʃəl /

A1
  • adjecitve
  • Being additional or extra
  • Different, better or greater than normal
  • noun
  • Heavily discounted sales item

water

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US / 'wɔ:tə(r) /

UK / ˈwɔtɚ, ˈwɑtɚ /

A1
  • noun
  • Clear liquid that forms the seas, rivers and rain
  • Large area such as an ocean or sea
  • verb
  • (Of the eyes) to produce tears
  • (Mouth) to become wet at the thought of nice food
  • To pour liquids onto a plant to keep it alive

well

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US / wel /

UK / wɛl /

A1
  • adjecitve
  • Being in a fortunate, good condition or state
  • Healthy and in good condition
  • adverb
  • In an acceptable, proper, or successful manner
  • In a complete, total, or full manner
  • A great and considerable degree
  • In a successful way, in a good or satisfactory way
  • exclamation
  • Used to begin or continue a particular statement
  • Used to show you want to start saying something
  • Used to express that you are waiting for a reply
  • You say this to change the topic of a conversation
  • Used to indicate you are making a final remark
  • noun
  • Long deep hole in the ground to get water
  • verb
  • To cause your eyes to fill with tears

vent

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US / vent /

UK / vɛnt /

B2
  • noun
  • Opening allowing exit/entry of gas, steam etc.
  • Expression of feelings often of anger
  • verb
  • To express anger or grievance loudly/with feeling

those

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US / ðəʊz /

UK / ðoz /

A1
  • determiner
  • The people or things we are talking about
  • pronoun
  • The objects far from the speaker

rich

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US / rɪtʃ /

UK / rɪtʃ /

A1
  • adjecitve
  • Having a lot of money or valuable possessions
  • Containing a lot of exciting events or experiences and therefore very interesting
  • (of a color, sound, smell, etc.) Pleasantly deep or strong
  • If food is rich, it contains a large amount of oil, butter, eggs, or cream.

amount

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US / ə'maʊnt /

UK / əˈmaʊnt /

A1
  • noun
  • Quantity of something
  • verb
  • To add up to a certain figure

home

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US / həʊm /

UK / hom /

A1
  • adjecitve
  • A sports team's own field or place of play
  • adverb
  • Into the correct or intended position
  • noun
  • House, apartment or building to be rented or sold
  • Institution for sick or elderly people
  • Place where a person or a family lives
  • Country where a person lives or was born
  • Region that is native to peoples, plant or animals
  • verb
  • To move towards a particular target location

lava

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US / ˈlɑ:və /

UK / 'lɑ:və /

B2
  • noun
  • Very hot liquid rock flowing from a volcano

selection

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US / sɪˈlekʃn /

UK / sɪˈlɛkʃən /

A2
  • noun
  • Process of choosing someone or something carefully
  • Something chosen carefully from a larger group
  • Range or variety of things you can choose from

tour

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US / tʊə(r) /

UK / tʊr /

A2
  • noun
  • A trip to several places to perform a show
  • A journey to visit several places for pleasure
  • verb
  • To travel to several places to perform a show
  • To visit several places for pleasure

ocean

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US / 'əʊʃn /

UK / ˈoʃən /

A2
  • noun
  • Large body of salt water; a large sea

earth

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US / ɜ:θ /

UK / ɚθ /

A1
  • noun
  • Wire connecting an electrical device to the ground
  • The planet we live on
  • Soil in which we grow plants

few

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US / fju: /

UK / fju /

A1
  • pronoun
  • Not many, a small number

spend

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US / spend /

UK / spɛnd /

A2
  • verb
  • To use money to pay for something
  • To use time in order to do something
  • To use up something completely

time

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US / taɪm /

UK / taɪm /

A1
  • noun
  • Speed at which music is played; tempo
  • Point as shown on a clock, e.g. 3 p.m
  • Number of hours, minutes needed to do something
  • Occasion when something happens
  • Period or occasion that something occurred
  • Period in history or the past
  • Something measured in minutes, hours, days, etc.
  • How long an event takes; duration
  • verb
  • To check speed at which music is performed
  • To choose a specific moment to do something
  • To measure how long an event takes, e.g. a race
  • To schedule something to occur at a specific moment

anywhere

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US / ˈeniweə(r) /

UK / ˈeniwer /

A1
  • adverb
  • To any extent or degree (often used with not)
  • In, at or to any place
  • other
  • Use to indicate limits or variation

grow

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US / ɡrəʊ /

UK / ɡro /

A1
  • verb
  • To get bigger and more mature; make plants do this
  • To improve; to develop better skills over time
  • To develop and become bigger or taller over time

within

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US / wɪˈðɪn /

UK / wɪðˈɪn, wɪθ- /

A1
  • adverb
  • Inside the limits of an area, time or range
  • preposition
  • From the inside of something

field

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US / fi:ld /

UK / fild /

A1
  • noun
  • Area of study, such as physics or biology
  • Piece of land used to grow crops/raise animals
  • Open area of land, especially without buildings
  • Grassed area where you play some sports
  • verb
  • To respond to something or answer a question
  • To catch or stop a ball during a game

such

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US / sʌtʃ /

UK / sʌtʃ /

A1
  • determiner
  • Being similar to
  • (Thing) as previously stated or referred to
  • adverb
  • (Used to emphasize the quality of an adjective)

generate

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US / ˈdʒenəreɪt /

UK / ˈdʒɛnəˌret /

A2
  • verb
  • To create or be produced or bring into existence
  • To create electricity, heat, energy and power

just

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US / dʒʌst /

UK / dʒʌst /

A1
  • adjecitve
  • Proper or appropriate; as is deserved
  • Doing or being what is right or fair
  • Legally correct; having enough evidence
  • adverb
  • Almost; nearly
  • Exactly at the time of
  • Exactly (the same as, like)

tower

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US / 'taʊə(r) /

UK / ˈtaʊɚ /

A2
  • noun
  • Tall, narrow building
  • Tall metal structure for broadcasting, or the view
  • verb
  • To be very good at something

under

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US / ˈʌndə(r) /

UK / ˈʌndɚ /

A1
  • adjecitve
  • In the same place as another thing, but lower
  • adverb
  • In a lower quantity or price than expected
  • preposition
  • According to the terms of an agreement or law
  • Managed or controlled by the authority of
  • Being of a lesser quality or amount than expected
  • Influenced or affected by something or someone
  • Less or lower in age, amount, size or number

start

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US / stɑ:t /

UK / stɑrt /

A1
  • noun
  • First time or place that a thing exists; beginning
  • First opportunity to achieve something, e.g. a job
  • Sudden action or movement because you are scared
  • other
  • Beginning of something in place or time
  • verb
  • To do, be or happen for the first time; begin
  • To turn something on

land

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US / lænd /

UK / lænd /

A1
  • noun
  • Region or country
  • Earth; the ground
  • verb
  • To arrive or cause a boat to arrive at the shore
  • To obtain or get something that you wanted
  • To (cause to) come down to the ground safely
  • To cause to arrive in a specific place or state

depend

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US / dɪˈpend /

UK / dɪˈpend /

B1
  • verb
  • Be controlled or determined by (someone/something)

for

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US / fə(r) /

UK / fɔr,fə /

A1
  • preposition
  • Used to show the purpose, or need of something

short

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US / ʃɔ:t /

UK / ʃɔrt /

A1
  • adverb
  • Less than what is needed
  • Suddenly stopping what you are saying or doing
  • verb
  • (Of electric circuit) to spark because faulty
  • adjecitve
  • Measuring a small distance
  • Happening for a small amount of time
  • Unfriendly or rude

piece

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US / pi:s /

UK / pis /

A1
  • noun
  • A counter in a board game
  • Small part of something larger
  • verb
  • To put items together to assemble something

check

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US / tʃek /

UK / tʃɛk /

A1
  • adjecitve
  • Decorated with squares made up of lines
  • noun
  • Paper showing how much you owe at a restaurant
  • Printed piece of paper you sign to pay for things
  • A mark on a form, equivalent to 'yes'; tick
  • Mark used to show that something is correct
  • Procedure to prevent errors or control something
  • verb
  • To confirm the details of something are correct
  • To leave your things with staff who look after it
  • To examine something to see if something is wrong
  • To examine in order to prevent errors/a problem

low

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US / ləʊ /

UK / lo /

A1
  • adjecitve
  • Having a small quantity, supply, or amount
  • Being unhappy or unpleasant in attitude
  • Not high; being near the ground, or bottom
  • (Of a voice, sound) being soft; quiet
  • noun
  • Situation of not having a lot of something

meter

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US / ˈmi:tə(r) /

UK / ˈmitɚ /

A1
  • noun
  • Unit of length equal to 100 cm or about 39 inches
  • Device for measuring things e.g. gas
  • Device to put money into to rent a parking place
  • Rhythm of a poem
  • verb
  • To measure water, etc. when it has to be paid for

precipitate

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US / prɪ'sɪpɪteɪt /

UK / prɪˈsɪpɪˌtet /

B2
  • verb
  • To cause to happen
  • To rain, snow or hail

oceanographic

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US / əʊʃɪənəʊ'græfɪk /

UK / oʊʃɪrnoʊ'græfɪk /

C1
  • adjecitve
  • Dealing with the oceans

have

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US / həv /

UK / hæv /

A1
  • verb
  • To drink, smoke, eat or use something
  • To experience the effects of something
  • To organize an event, or join in an activity
  • To own, possess, or hold something
  • To cause to happen or produce a particular effect

sulfide

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US / 'sʌlfaɪd /

UK / ˈsʌlˌfaɪd /

A1
  • other
  • A compound of sulphur and some other element that is more electropositive

plate

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US / pleɪt /

UK / plet /

A2
  • noun
  • Flat dish used for eating or serving food
  • Smooth, thin piece of metal applied in a layer
  • Small, flat piece of metal with information on it
  • verb
  • To put a layer of metal on something to protect it

with

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US / wɪð /

UK / wɪð, wɪθ /

A1
  • preposition
  • As an employee of a certain company
  • Against something or someone
  • By using something as a means
  • Due to; because of
  • Including
  • Possessing as a feature
  • Related to
  • (Of the manner/attitude by which you do something)
  • Used to express that people or things are together

gold

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US / gəʊld /

UK / goʊld /

A2
  • noun
  • Soft yellow metal that is very valuable
  • Person's name
  • adjecitve
  • Dark yellow color often seen in sunsets

full

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US / fʊl /

UK / fʊl /

A1
  • adjecitve
  • Containing all the parts; complete
  • Containing or holding as much as possible
  • Having had enough food
  • adverb
  • In a direct manner; completely

magma

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US / 'mæɡmə /

UK / 'mæɡmə /

B2
  • noun
  • Hot liquid rock from the Earth's crust

pure

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US / pjʊə(r) /

UK / pjʊr /

A2
  • adjecitve
  • Not mixed with anything else
  • Being morally good

seawater

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US / 'si:wɒtə /

UK / ˈsiˌwɔtɚ, -ˌwɑtɚ /

B2
  • noun
  • Water from the sea; salt water

manganese

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US / ˈmæŋgəni:z /

UK / ˈmæŋɡəˌniz, -ˌnis /

A1
  • noun
  • Brittle gray metallic element that resembles iron

island

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US / ˈaɪlənd /

UK / ˈaɪlənd /

A1
  • noun
  • Area of land that is surrounded by water

hundred

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US / 'hʌndrəd /

UK / ˈhʌndrɪd /

A1
  • number
  • 100

see

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US / si: /

UK / si /

A1
  • verb
  • To go on a date with someone
  • To predict whether something is, or will be true
  • To understand what someone says
  • To use your eyes to look at something
  • To visit a place often for sightseeing or pleasure
  • To visit or meet with someone
  • To find out by waiting or looking
  • To watch (a game, movie or TV show)

crust

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US / krʌst /

UK / krʌst /

B2
  • noun
  • Hard outer layer of something, e.g. the earth
  • Hard crisp outer layer of bread, baked goods

behind

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US / bɪˈhaɪnd /

UK / bɪˈhaɪnd /

A1
  • adjecitve
  • Concerning a later or slower time than expected
  • Being in a losing position in a sporting event
  • Being in the past; old fashioned
  • adverb
  • Remaining
  • noun
  • The part of the body that one sits on
  • preposition
  • At or toward the back of someone or something
  • Supporting or helping someone

interest

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US / 'ɪntrəst /

UK / ˈɪntrɪst, -tərɪst, -ˌtrɛst /

A1
  • noun
  • Best or most advantageous thing for someone
  • Activity or subject one enjoys doing or learning
  • Fee for borrowing money
  • verb
  • To make someone want to know about something
  • To persuade to do, become involved with something

process

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US / prə'ses /

UK / ˈprɑsˌɛs, ˈproˌsɛs /

A2
  • noun
  • Dealing with official forms in the way required
  • Set of changes that occur slowly and naturally
  • verb
  • To organize and use data in a computer
  • To deal with official forms in the way required
  • To prepare by treating something in a certain way
  • To adopt a set of actions that produce a result
  • To convert by putting something through a machine

last

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US / lɑ:st /

UK / læst /

A1
  • adjecitve
  • Most recent; the latest
  • The one before
  • adverb
  • Final; with nothing following; after all others
  • Most recent; the latest
  • determiner
  • The one at the end
  • verb
  • To remain or continue for a certain period of time

know

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US / nəʊ /

UK / noʊ /

A1
  • verb
  • To be familiar with a person or place, thing
  • To feel sure or be convinced about something
  • To discover or be aware of something
  • To be able to distinguish
  • To have knowledge of things

scientist

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US / ˈsaɪəntɪst /

UK / ˈsaɪəntɪst /

A2
  • noun
  • Person who is trained in a science

discovery

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US / dɪ'skʌvərɪ /

UK / dɪˈskʌvəri /

A2
  • noun
  • Learning something for the first time

seafloor

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US / 'si:flɒə /

UK / ˈsiˌflɔr, -ˌflor /

C2
  • noun
  • Bottom of the sea

enjoy

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US / ɪnˈdʒɔɪ /

UK / ɛnˈdʒɔɪ /

A1
  • verb
  • To take pleasure in something

often

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US / ˈɔfən /

UK / ˈɔfən,ˈɑfən,ˈɔftən,ˈɑf- /

A1
  • adverb
  • Many times; frequently; on many occasions

roman

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US / rɔmə /

UK / roˈmɑŋ /

A1
  • adjecitve
  • A resident of modern Rome
  • other
  • A typeface used in ancient Roman inscriptions
  • An inhabitant of the ancient Roman Empire
  • Characteristic of the modern type that most directly represents the type used in ancient Roman inscr
  • Of or relating to or supporting Romanism
  • Relating to or characteristic of people of Rome

premium

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US / ˈpri:miəm /

UK / ˈprimiəm /

B1
  • adjecitve
  • Having a higher than normal quality
  • noun
  • Money paid as a fee for insurance

seep

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US / si:p /

UK / sip /

B2
  • verb
  • To flow slowly through small openings or pores

smoke

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US / sməʊk /

UK / smoʊk /

B1
  • noun
  • Grey gas from fires and cigarettes
  • Fog of air coming from e.g. a cigarette, fire
  • verb
  • To give off a cloud of grey gas from burning
  • To add a taste to food by putting it near a fire
  • To breathe in through a cigarette, etc.

serve

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US / sɜ:v /

UK / sɚv /

A2
  • verb
  • To act in a particular position or office
  • To hit the first ball to an opponent in tennis etc.
  • To be used for a particular purpose
  • To give someone food or drinks
  • To give a person or group a service that is needed
  • To spend a particular amount of time in prison
  • To help customers find products and making sales
  • To give an official paper to appear in court

worldwide

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US / ˈwɜ:ldwaɪd /

UK / ˈwɚldˈwaɪd /

B1
  • adjecitve
  • Spanning or extending throughout the entire world
  • adverb

end

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US / end /

UK / ɛnd /

A1
  • noun
  • The point where a process or activity stops
  • A point that marks the limit of something; finish
  • Goal or desired result
  • The tip, edge or limit of something
  • verb
  • To be the last part of something

protect

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US / prə'tekt /

UK / prəˈtɛkt /

A1
  • verb
  • To defend someone or something from harm or danger

million

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US / ˈmɪljən /

UK / ˈmɪljən /

A1
  • number
  • 1,000,000

thousand

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US / ˈθaʊznd /

UK / ˈθaʊzənd /

A1
  • number
  • Number 1,000

surround

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US / səˈraʊnd /

UK / səˈraʊnd /

A2
  • other
  • To be closely connected to and have an effect on
  • verb
  • To be all the way around something
  • To be closely connected to and have an effect on
  • To move closer on all sides of something

itself

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US / ɪtˈself /

UK / ɪtˈsɛlf /

A1
  • pronoun
  • Referring to it

feel

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US / fi:l /

UK / fil /

A1
  • verb
  • To be aware of or experience an emotion, sensation
  • To sense through direct contact; touch

realize

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US / 'ri:əlaɪz /

UK / ˈriəˌlaɪz /

A1
  • verb
  • To become aware of or understand mentally

interact

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US / ˌɪntər'ækt /

UK / ˌɪntɚˈækt /

A2
  • verb
  • To talk or do things with each other

supply

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US / sə'plaɪ /

UK / səˈplaɪ /

A2
  • noun
  • Availability of products and services for use
  • Specific things needed to perform a certain task
  • verb
  • To give or sell goods to others for their use

characterize

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US / 'kærəktəraɪz /

UK / ˈkærəktəˌraɪz /

A2
  • verb
  • To describe the qualities of person, place, thing

area

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US / 'eərɪə /

UK / ˈɛriə /

A1
  • noun
  • Amount of measured space
  • A specific section or space; part of a region
  • A subject or field of study

day

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US / deɪ /

UK / de /

A1
  • noun
  • A period of 24 hours beginning at midnight
  • The period of time when it is light outside
  • Person's name

electronic

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US / ɪˌlek'trɒnɪk /

UK / ɪlɛkˈtrɑnɪk, ˌilɛk- /

A2
  • adjecitve
  • Operating by use of electricity; digital

heat

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US / hi:t /

UK / hit /

A2
  • noun
  • State of anger, excitement, or arguing
  • Particular temperature at which to cook something
  • High temperature
  • One of series of races to find the finalists
  • Hot temperature, conditions, or weather
  • verb
  • To make hot or hotter

processes

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US / ˈprəʊsesɪz , prəˈsesɪz /

UK / ˈprɑːsesɪz , prəˈsesɪz /

B1
  • other
  • Sets of changes that occur slowly and naturally
  • verb
  • To organize and use data in a computer
  • To deal with official forms in the way required
  • To prepare by treating something in a certain way
  • To adopt a set of actions that produce a result
  • To convert by putting something through a machine

knowledge

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US / ˈnɒlɪdʒ /

UK / ˈnɑlɪdʒ /

A1
  • noun
  • Information, understanding, or skill

contain

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US / kənˈteɪn /

UK / kənˈten /

A2
  • verb
  • To keep something from spreading
  • To hold something inside something else

reason

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US / 'ri:zn /

UK / ˈrizən /

A1
  • noun
  • Ability to think about facts and form a judgment
  • Explanation for why something occurred or was done
  • verb
  • To think and make conclusions in a logical manner

many

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US / 'menɪ /

UK / ˈmɛni /

A1
  • determiner
  • Used to refer a large number of things

fluid

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US / 'flu:ɪd /

UK / ˈfluɪd /

B2
  • adjecitve
  • A material that can easily flow, e.g. water
  • Able to move smoothly or gracefully
  • Changing often and without warning
  • noun
  • Liquid that flows smoothly, such as water

centimetre

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US / ˈsentɪmi:tə(r) /

UK / ˈsɛntəˌmitɚ /

A1
  • noun
  • One hundredth of a meter

uncertainty

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US / ʌn'sɜ:tntɪ /

UK / ʌnˈsə:tn:ti /

B2
  • noun
  • Feeling of not really knowing what will happen

ever

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US / 'evə(r) /

UK / ˈɛvɚ /

A1
  • adverb
  • At any time; at all times in the future

once

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US / wʌns /

UK / wʌns /

A1
  • adverb
  • One time; one instance
  • At a time in the past
  • conjunction
  • When; as soon as

shift

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US / ʃɪft /

UK / ʃɪft /

A2
  • adjecitve
  • (Of work) starting at a certain time, as at night
  • noun
  • A change in a persons plans, opinions or beliefs
  • Period of work starting at a certain time
  • verb
  • To change in position or direction
  • To move something from one place to another

liquid

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US / ˈlɪkwɪd /

UK / ˈlɪkwɪd /

A2
  • adjecitve
  • (Of wealth) being able to be spent as cash
  • In a state of being uncertain
  • Moving in a flowing manner, like water or oil
  • noun
  • Something that is similar to the state of water

massive

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US / ˈmæsɪv /

UK / ˈmæsɪv /

B1
  • adjecitve
  • Very big; large; too big

underwater

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US / ˌʌndəˈwɔ:tə(r) /

UK / ˈʌndɚˌwɔtɚ, -ˌwɑtɚ /

C2
  • adjecitve
  • (Moving or existing) beneath the surface of water

after

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US / 'ɑ:ftə(r) /

UK / ˈæftɚ /

A1
  • adverb
  • Later than another time, or behind something
  • conjunction
  • Following something before
  • preposition
  • When an event happened or time has passed

tectonic

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US / tekˈtɒnɪk /

UK / tekˈtɑ:nɪk /

A1
  • adjecitve
  • Denoting or relating to construction or building
  • Concerning the formation of the Earth's surface

small

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US / smɔ:l /

UK / smɔl /

A1
  • adjecitve
  • Little in size; not big
  • (Of letters) not written in capital letters
  • Being insignificant or minor
  • (Of a business) with few people or things; local
  • (Of voice) being soft and quiet
  • (Of a child) being young

formally

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US / 'fɔ:məlɪ /

UK / ˈfɔrml:ɪ /

B1
  • adverb
  • In a formal manner; officially
  • In your best clothes, e.g. for a prom

science

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US / 'saɪəns /

UK / ˈsaɪəns /

A2
  • noun
  • Study of the physical world, based on facts

episode

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US / 'epɪsəʊd /

UK / ˈɛpɪˌsod /

B1
  • noun
  • One separate event in a series of events
  • Show which is part of a larger story

white

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US / waɪt /

UK / hwaɪt, waɪt /

A1
  • adjecitve
  • Belonging to a race of people with light skin
  • Of the color of fresh snow and milk
  • noun
  • Person's name
  • Lightest color; The color of fresh snow.

thick

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US / θɪk /

UK / θɪk /

A2
  • adjecitve
  • Difficult to see through, as fog
  • Full of (people, etc.)
  • (Of a liquid) that moves or pours slowly
  • Stupid; not smart
  • (Of person's accent) hard to understand
  • Having a large distance between two surfaces

millimetre

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US / ˈmɪlimi:tə(r) /

UK / ˈmɪlimiːtər /

B1
  • noun
  • Unit of measure, 1/1000 of a metre (symbol mm)

pirate

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US / 'paɪrət /

UK / ˈpaɪrɪt /

B1
  • noun
  • Person who attacks ships in order to steal things
  • verb
  • To copy or sell a product illegally
  • To steal things from ships by force

will

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US / wɪl /

UK / wɪl /

A1
  • noun
  • Desire or choice of someone
  • Document saying who gets your money when you die
  • Strong desire to do something; determination
  • Desire to do something; strong wish to do
  • other
  • Used with verbs to express the future
  • verb
  • To leave property to someone after your death
  • To use mental effort to make something happen
  • Am (is, are) likely to do
  • To influence someone to do something
  • To make something happen by strongly wanting it

always

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US / 'ɔ:lweɪz /

UK / ˈɔlwez,-wɪz,-wiz /

A1
  • adverb
  • For a very long time
  • At all times; in every situation
  • For ever

new

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US / nju: /

UK / nu, nju /

A1
  • adjecitve
  • Not old, recently born, built or made
  • Being or doing something for the first time
  • Not felt, seen or known previously
  • Having been recently bought or obtained

this

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US / ðɪs /

UK / ðɪs /

A1
  • adjecitve
  • Used to indicate something already been discussed
  • Used to indicate something happening around now
  • adverb
  • An indication by a physical motion or gesture
  • A specific amount of
  • determiner
  • Person, thing, or idea near you
  • pronoun
  • Person, thing that has already been discussed

live

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US / lɪv /

UK / liv /

A1
  • adjecitve
  • Being broadcast as events happen, not recorded
  • Carrying electric current; able to give a shock
  • Glowing because burning; hot
  • Not yet killed (for food)
  • adverb
  • (Music, drama) as it is performed
  • verb
  • To be alive
  • To experience a particular type of life
  • To make your home in a house or town

level

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US / 'levl /

UK / ˈlɛvəl /

A2
  • adjecitve
  • (Sports) equal to another
  • Being steady and determined (e.g. a voice)
  • noun
  • Specific height of something
  • Amount of ability you have compared to others
  • Floor or deck within a building
  • Tool used to determine if something is lying flat
  • verb
  • To aim a gun at someone
  • To destroy a building; flatten an area completely
  • To make things flat or even
  • To make a score equal to another, in sports

into

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US / 'ɪntə /

UK / ˈɪntu /

A1
  • preposition
  • Moving or going inside something
  • In the same direction as; in the direction of
  • So as to become; taking the state of

kind

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US / kaɪnd /

UK / kaɪnd /

A1
  • adjecitve
  • In a caring and helpful manner
  • friendly and considerate
  • noun
  • One type of thing

crack

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US / kræk /

UK / kræk /

B1
  • noun
  • Attempt to achieve a goal or objective
  • Unexpected and hard hit to the body
  • Joke or impolite comment about something
  • Sound that is short, unexpected and loud
  • Small gap between two things or parts of things
  • verb
  • To attempt to achieve a goal or objective
  • To hit someone or something hard and unexpectedly
  • To tell (a joke)
  • To solve a challenging problem or mystery
  • To make a sound that is short, unexpected and loud
  • To lose control, e.g. under pressure; break down
  • To break so lines appear, but it is not in pieces

smoker

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US / 'sməʊkə(r) /

UK / ˈsmokɚ /

B1
  • noun
  • Device that exposes food to smoke as it cooks
  • Person who smokes cigarettes, etc.

oxide

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US / ˈɒksaɪd /

UK / ˈɑ:ksaɪd /

B2
  • noun
  • Compound from combining oxygen with a chemical

how

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US / haʊ /

UK / haʊ /

A1
  • adjecitve
  • To what degree? in what amount?
  • adverb
  • (Used to explain the way to do something)
  • exclamation
  • For what purpose or reason?
  • (Used to ask someone or something's condition)

contact

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US / 'kɒntækt /

UK / ˈkɑnˌtækt /

A2
  • adjecitve
  • Touching or feeling something
  • noun
  • Touching or feeling something
  • Object that allows electricity to run through it
  • Communication with someone or something
  • People who can give you information, introductions
  • verb
  • To get in touch with someone

ones

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US / wʌnz /

UK / wʌnz /

A1
  • number
  • Number 1, a single person or thing

surface

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US / 'sɜ:fɪs /

UK / ˈsɚfəs /

A2
  • adjecitve
  • Of the top layer; not deep or meaningful
  • noun
  • Top layer of the ground or of water
  • Nature or emotions that show, but may not be true
  • Outside or upper layer of something
  • verb
  • To give (road) a top layer
  • To appear after being hidden, unseen, or unknown
  • To come to the top of something; emerge
  • To come to the top level of water, mud, etc.

you

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US / jʊ /

UK / ju /

A1
  • pronoun
  • Person someone is speaking or writing to
  • Person or people in general

little

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US / 'lɪtl /

UK / ˈlɪtl /

A1
  • adjecitve
  • Being short in length of time
  • Not great in size, amount, or degree; small
  • Being very young or younger than others
  • adverb
  • By an amount or degree that is not very much
  • Not often; rarely
  • noun
  • A person's name

sediment

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US / ˈsedɪmənt /

UK / ˈsɛdəmənt /

B2
  • noun
  • Material that settles to the bottom of a liquid

hunk

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US / hʌŋk /

UK / hʌŋk /

C1
  • noun
  • An attractive man, e.g. with lots of muscles

strength

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US / streŋθ /

UK / strɛŋkθ, strɛŋθ, strɛnθ /

A2
  • noun
  • Condition of being strong

ore

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US / ɔ:(r) /

UK / ɔr, or /

B2
  • noun
  • Rock containing valuable metal

might

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US / maɪt /

UK / maɪt /

A1
  • other
  • Used to politely request an action
  • Used to express that something could happen
  • Power, strength, force or influence

phone

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US / fəʊn /

UK / foʊn /

A2
  • noun
  • Machine used to talk to someone who is far away
  • verb
  • To talk to someone using a telephone

than

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US / ðən /

UK / ðən /

A1
  • conjunction
  • Used to compare two things that are not equal

hydrothermal

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US / ˌhaɪdrə'θɜ:məl /

UK / ˌhaɪdrə'θɜ:məl /

A1
  • adjecitve
  • (Geological Science) of or relating to the action of water under conditions of high temperature, esp

one

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US / wʌn /

UK / wʌn /

A1
  • pronoun
  • You; we; people in general; someone
  • The thing or person previously referred to
  • adjecitve
  • Used to refer to people generally
  • Being a strong example of (something mentioned)
  • number
  • Number 1

deep

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US / di:p /

UK / dip /

A1
  • adjecitve
  • Complex and important
  • Extreme or intense
  • Going far down from the surface
  • Low in pitch, as a sound
  • adverb
  • At a certain distance beneath the surface

subscription

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US / səbˈskrɪpʃn /

UK / səbˈskrɪpʃən /

B1
  • noun
  • Regular payment for a service, magazine etc.

rock

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US / rɒk /

UK / rɑk /

A1
  • noun
  • Type of popular music with a strong, loud beat
  • Strong, tough person who can be relied upon
  • Big stone; hard, solid substance forming mountains
  • verb
  • To be greatly upset by something, e.g. a death
  • To be extremely effective or pleasing
  • To play, sing along with, or dance to heavy music
  • To move back and forth or from side to side

geochemical

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US / ˌdʒiːəˈkemɪkəl /

UK / /

A1
  • adjecitve
  • The chemistry of the composition and alterations of the solid matter of the earth or a celestial bod

year

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US / jə: /

UK / jɪr /

A1
  • noun
  • Unit of time equal to 12 months or 365 or 366 days
  • Used to refer to the age of a person

make

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US / meɪk /

UK / mek /

A1
  • noun
  • Product made by a particular company; brand
  • verb
  • To arrange or prepare something e.g. dinner
  • To get to (a place) on time
  • To gain the status of (teacher, lawyer, etc.)
  • To create something by putting things together
  • To earn a certain amount of money at a job
  • To cause or force a person to do something
  • To cause something to happen or be formed

surprised

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US / səˈpraɪzd /

UK / sərˈpraɪzd /

A1
  • adjecitve
  • Feeling a shock when something unexpected happens
  • verb
  • To do something that another person didn't expect

big

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US / bɪɡ /

UK / bɪɡ /

A1
  • adjecitve
  • Popular
  • Serious
  • Large

overwhelming

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US / ˌəʊvəˈwelmɪŋ /

UK / ˌovɚˈhwɛlmɪŋ, -ˈwɛl- /

B2
  • adjecitve
  • Having too much to handle (e.g. work)
  • verb
  • To defeat something or someone completely
  • To affect someone emotionally in a strong way
  • To cause to have too much to handle (e.g. work)

other

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US / 'ʌðə(r) /

UK / ˈʌðər /

A1
  • adjecitve
  • A thing different from that mentioned
  • determiner
  • (Something) else; not the first (one)
  • pronoun
  • Being the one and only thing of that category

demand

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US / dɪ'mɑ:nd /

UK / dɪˈmænd /

A2
  • noun
  • Desire customers have to buy product, service
  • A strong request for someone to do something
  • verb
  • To strongly request someone to do something

ecosystem

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US / ˈi:kəʊsɪstəm /

UK / ˈɛkoˌsɪstəm, ˈiko- /

B1
  • noun
  • Types of plants and animals in an specific area

also

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US / 'ɔ:lsəʊ /

UK / ˈɔlso /

A1
  • adverb
  • In addition; too; in a similar way

chemical

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US / ˈkemɪkl /

UK / ˈkɛmɪkəl /

A2
  • adjecitve
  • Made of various elements
  • noun
  • Basic substance produced by mixing elements

clump

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US / klʌmp /

UK / klʌmp /

B2
  • noun
  • Mass or pile of something such as soil
  • Small group of trees, etc. growing near each other

expose

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US / ɪk'spəʊz /

UK / ɪkˈspoʊz /

A2
  • noun
  • News article revealing secret information
  • verb
  • To make visible, without covering or protection
  • To allow light through a cameras lens onto film
  • To be talked about in the media
  • To make a secret known to the public
  • To experience something, often a harmful thing

the

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US / ðə /

UK / ðə /

A1
  • article
  • Used to refer to something already mentioned
  • Used to show there is only one of something
  • determiner
  • Used to describe all of a family

lead

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US / li:d /

UK / lid /

A1
  • adjecitve
  • Being the main part in movies or plays
  • noun
  • Wire for electricity, computer, etc.; cable
  • Information that could help to solve a crime
  • Main part in a play or movie
  • Heavy, gray metal element
  • Rope used to tie something to stop it escaping
  • Act of being at the front in a race or game
  • verb
  • To show the way or guide others
  • To be at the front of a race or game
  • To travel in front of; go in advance of others

below

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US / bɪ'ləʊ /

UK / bɪˈlo /

A1
  • preposition
  • In a lower position, place, or level

originally

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US / əˈrɪdʒənəli /

UK / əˈrɪdʒənəli /

A2
  • adverb
  • At first; in the beginning
  • In a new and unique manner

over

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US / 'əʊvə(r) /

UK / ˈovɚ /

A1
  • adverb
  • Finished; no longer happening
  • Towards the ground/away from a standing position
  • noun
  • A set of six consecutive balls bowled in cricket
  • other
  • Finished
  • preposition
  • Showing the relation when a thing is above another
  • On or covering something
  • Above or across something
  • More than you need
  • From one side to the other
  • In the direction of; toward

out

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US / aʊt /

UK / aʊt /

A1
  • adverb
  • No longer stylish (e.g. fashion)
  • Away from home, business, or the usual place
  • In a direction/movement away from inside or center
  • noun
  • Act when a batter cannot continue playing
  • verb
  • To tell people a secret

most

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US / məʊst /

UK / most /

A1
  • adverb
  • Very; extremely
  • Greatest possible degree
  • pronoun
  • Nearly all of something

sometimes

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US / ˈsʌmtaɪmz /

UK / ˈsʌmˌtaɪmz /

A1
  • adverb
  • Only at certain times; occasionally

prone

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US / prəʊn /

UK / proʊn /

B2
  • adjecitve
  • Lying flat with your head facing the ground
  • Likely to have, do or be (usually something bad)

hot

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US / hɒt /

UK / hɑ:t /

A1
  • adjecitve
  • Angry or excited
  • Being very good at something
  • Having a high temperature
  • Popular and causing a great deal of excitement
  • Attractive in a sexually exciting way
  • (Of food) very spicy
  • Stolen; dangerous to buy or trade in

extinct

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US / ɪkˈstɪŋkt /

UK / ɪkˈstɪŋkt /

B1
  • adjecitve
  • (Of animal, etc.) having died out; with none left
  • (E.g. of volcano) not active

and

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US / ənd /

UK / ənd, ən,ænd /

A1
  • conjunction
  • Used to refer to two or more things
  • Plus; in addition; on top of that
  • Used to introduce an action that follows another

nucleus

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US / ˈnju:kliəs /

UK / ˈnu:kliəs /

B2
  • noun
  • Center of an atom
  • Control center of a cell
  • Most important part of something larger

squeeze

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US / skwi:z /

UK / skwiz /

C1
  • noun
  • Amount of liquid from firmly pressing e.g. orange
  • Act of putting pressure on, as to get liquid out
  • When there is not enough space for things/people
  • Act of firmly pressing on two or more sides
  • verb
  • To force or threaten someone to give you something
  • To strongly compress something to get liquid out
  • To be pressed together or crowded into an area
  • To press together the opposite sides of something
  • To reduce the amount of something

underneath

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US / ˌʌndə'ni:θ /

UK / ˌʌndɚˈniθ /

B1
  • adverb
  • Hidden beneath the surface of something
  • On the lower side or bottom of something
  • preposition
  • Lower than, as in status; beneath
  • Located under or below something

put

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US / pʊt /

UK / pʊt /

A1
  • phrasal verb
  • to make a light stop shining by pressing or moving a switch
  • verb
  • To move or place a thing in a particular position
  • To rate something in importance or value
  • To write or say something in a certain manner

dissolve

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US / dɪˈzɒlv /

UK / dɪˈzɑ:lv /

B2
  • verb
  • To cause something to end
  • To dismiss, e.g. a law-making body
  • To melt into and become part of a liquid
  • To end a legal relationship or organization

volcano

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US / vɒlˈkeɪnəʊ /

UK / vɑ:lˈkeɪnoʊ /

B1
  • noun
  • Mountain through which hot liquid earth can erupt

back

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US / bæk /

UK / bæk /

A1
  • adjecitve
  • Farthest from the front e.g. in a classroom
  • adverb
  • Have returned to a place you were before
  • noun
  • The part of a chair that the upper body leans upon
  • Location at the rear of something
  • The reverse of side something
  • Area on the rear of your body
  • verb
  • To bet money on something
  • To go backwards in a car
  • To support and encourage someone or some cause

far

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US / fɑ:(r) /

UK / fɑr /

A1
  • adjecitve
  • A long way away
  • Being a long way away
  • adverb
  • To a large degree or extent

ridge

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US / rɪdʒ /

UK / rɪdʒ /

B1
  • noun
  • Edge where two leaning surfaces meet
  • Raised, narrow area, usually on top of a hill

floor

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US / flɔ:(r) /

UK / flɔr, flor /

A1
  • noun
  • Large area used for a particular purpose
  • Part of a room on which you stand
  • Particular level in a building; storey
  • verb
  • To hit or push someone to the ground
  • To surprise or confuse someone who can't respond

rare

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US / reə(r) /

UK / rɛr /

A2
  • adjecitve
  • (Of meat) cooked, but still red and juicy
  • Unusual or out of the ordinary; not common

glaze

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US / gleɪz /

UK / ɡlez /

B2
  • noun
  • Light coating of liquid that makes surface shiny
  • verb
  • To cover (food) with liquid to make it shine
  • (Eyes) to show no reaction; become dull, lifeless
  • To fit a piece of glass in the frame of a window

form

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US / fɔ:m /

UK / fɔrm /

A1
  • noun
  • Sports team or person's current winning record
  • Document you complete when making an application
  • Visible shape or style; type; kind
  • verb
  • To organize something such as a club or group
  • To develop; to come into a shape or substance
  • To make something into a particular shape

spring

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US / sprɪŋ /

UK / sprɪŋ /

A1
  • noun
  • Coil of metal that lessens impact, e.g. on cars
  • Sudden jump from one place to another
  • The time when plants start growing after winter
  • Place where water flows from beneath the ground
  • verb
  • To lessen the impact of something under pressure
  • To jump into the air

come

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US / kʌm /

UK / kʌm /

A1
  • verb
  • To arrive at a place
  • (Of mail) to be delivered
  • To move toward someone; go with someone
  • To reach a certain point or state

ancient

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US / 'eɪnʃənt /

UK / ˈenʃənt /

A2
  • adjecitve
  • Very old; having lived a very long time ago

along

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US / əˈlɒŋ /

UK / əˈlɔ:ŋ /

A1
  • adverb
  • As a companion; taken with someone
  • preposition
  • At a point on a line

company

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US / 'kʌmpənɪ /

UK / ˈkʌmpəni /

A1
  • noun
  • Good feeling from being with someone else
  • A business that sells things or provides services
  • Guests, especially in your home
  • Being with another person rather than alone

call

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US / kɔ:l /

UK / kɔl /

A1
  • noun
  • A order or request for action
  • The sound an animal makes, often when in danger
  • A correct prediction, e.g. a decision in a game
  • A short visit to a place or person
  • A decision by a referee or umpire in a game
  • verb
  • To make a request or order for action
  • (Animal) to make sounds to warn of danger
  • To announce the date of an election
  • To make a judgment about something
  • To give someone or something a name
  • To guess in advance the result or outcome
  • To visit a place or person for a short time
  • To phone someone
  • To speak, announce or shout in a loud voice

zinc

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US / zɪŋk /

UK / zɪŋk /

B2
  • noun
  • Bluish white metal used in making brass

leave

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US / li:v /

UK / liv /

A1
  • noun
  • Permission to do something
  • Vacation time; time off work
  • verb
  • To go away from; depart
  • To gift property to someone after you die
  • To allow something to continue happening
  • To let something remain unused or available
  • To let something or someone remain somewhere

anything

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US / ˈeniθɪŋ /

UK / ˈɛniˌθɪŋ /

A1
  • pronoun
  • A thing of any kind

large

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US / lɑ:dʒ /

UK / lɑ:rdʒ /

A1
  • adjecitve
  • Big; of great size; broad, tall, wide, or fat

only

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US / ˈəunli /

UK / ˈonli /

A1
  • adverb
  • Just one; just that amount or thing; not more than
  • Not very important or serious
  • Just that type of thing, person
  • Short time ago; not before a certain time
  • conjunction
  • Except; but

any

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US / 'enɪ /

UK / ˈɛni /

A1
  • adjecitve
  • One, or some, no matter which
  • pronoun
  • One (thing) of many; some

think

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US / θɪŋk /

UK / θɪŋk /

A1
  • verb
  • To have an idea about something without certainty
  • To have an idea, opinion or belief about something

lie

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US / laɪ /

UK / lai /

A2
  • noun
  • An untrue statement, when you know it is not true
  • verb
  • To be in a horizontal or flat position
  • To say something that you know is not true

help

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US / help /

UK / hɛlp /

A1
  • noun
  • Something given to enable a person to do something
  • Assistance given to someone in need
  • Someone who makes something easier or possible
  • verb
  • To act to enable a person to do something; assist
  • To make something better or less difficult

environment

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US / ɪn'vaɪrənmənt /

UK / ɛnˈvaɪrənmənt, -ˈvaɪən- /

A1
  • noun
  • Natural world in which plants and animals live
  • The entire surrounding conditions of something

lot

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US / lɒt /

UK / lɑt /

A1
  • noun
  • What happens to a person in life from chance; fate
  • A group of people seen together
  • Item for sale at an auction
  • Small area of land used for a purpose e.g. parking

from

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US / frəm /

UK / frʌm, frɑm,frəm /

A1
  • preposition
  • Starting at a particular place, time or level

where

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US / hwɛə /

UK / hwɛr, wɛr /

A1
  • conjunction
  • At or in the place which
  • In whatever place
  • pronoun
  • Word you use to ask the location of something

debris

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US / dəˈbri:, deɪ-, ˈdeɪˌbri: /

UK / dəˈbri, de-, ˈdeˌbri /

B2
  • noun
  • Remains of something broken or destroyed

finally

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US / ˈfaɪnəli /

UK / ˈfaɪnəli /

A1
  • adverb
  • used especially at the beginning of a sentence to introduce the last point or idea
  • After a long time or some difficulty

produce

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US / prə'dju:s /

UK / prəˈdus, -ˈdjus, pro- /

A1
  • noun
  • Fresh foods such as fruits and vegetables
  • verb
  • To grow something naturally
  • To make something appear
  • To manufacture something using machines
  • To control the making a movie or television show

both

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US / bəuθ /

UK / boθ /

A1
  • determiner
  • Used to refer to two things at the same time
  • pronoun
  • Used to refer to two things at the same time

pore

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US / pɔ:(r) /

UK / pɔr, por /

B2
  • noun
  • Small hole on skin, etc. allowing liquid to pass

they

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US / ðeɪ /

UK / ðe /

A1
  • pronoun
  • Two or more people, animals, or things

result

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US / rɪ'zʌlt /

UK / rɪˈzʌlt /

A2
  • noun
  • Something produced through tests or experiments
  • Final score of a competition, election or game
  • verb
  • To be the outcome of other causes and effects

fill

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US / fɪl /

UK / fɪl /

A1
  • noun
  • Act of filling; amount used to make something full
  • verb
  • To make something full
  • To move into all parts of an area
  • To repair a surface by adding a substance to it
  • To use (time); to do something during

pretty

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US / 'prɪtɪ /

UK / ˈprɪti /

A1
  • adjecitve
  • Being attractive to the eye in a simple way
  • adverb
  • Very; to a great degree

network

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US / ˈnetwɜ:k /

UK / ˈnetwɜ:rk /

A2
  • noun
  • Group of computers connected to each other
  • System of connections
  • Group who work closely with each other
  • Group of radio or television stations, programs
  • verb
  • To join a group of computers together
  • To exchange information with colleagues, contacts

minimize

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US / 'mɪnɪmaɪz /

UK / ˈmɪnəˌmaɪz /

B1
  • verb
  • To make something seem small or less important

all

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US / ɔ:l /

UK / ɔl /

A1
  • adverb
  • Completely; totally
  • determiner
  • Being every one of something
  • pronoun
  • 100% of something; the complete amount

expedition

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US / ˌekspəˈdɪʃn /

UK / ˌɛkspɪˈdɪʃən /

B1
  • noun
  • Long journey, often to a dangerous or new place
  • Short trip to a specific place, e.g. for shopping

take

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US / teɪk /

UK / tek /

A1
  • noun
  • Filming of a single scene for TV or the movies
  • verb
  • To accept something that is offered
  • To use a method of traveling, e.g. a bus or train
  • To use a camera to make (a photo)
  • To pick up something and go away with it
  • To study a subject in school
  • To attempt to pass (an exam)
  • To require a certain amount of time, money, space

lumpy

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US / 'lʌmpɪ /

UK / ˈlʌmpi /

B1
  • adjecitve
  • Like or containing small hard or sticky lumps

its

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US / ɪts /

UK / ɪts /

A1
  • adjecitve
  • Referring to or belonging to ‘it’
  • determiner
  • Of something; belonging or related to something
  • other
  • Possessive form of “it”

rings

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US / rɪŋz /

UK / rɪŋz /

A1
  • other
  • Roped areas in which people fight or box
  • Circular objects with a hole in it
  • Circular shapes or marks around some things
  • People doing illegal businesses or criminal activities
  • Round pieces of metal that goes on your finger
  • Acts of calling someone using a phone
  • verb
  • To draw a circular shape or mark around something
  • To make a loud, noisy constant sound
  • To produce a sound from a bell, alarm or telephone
  • To call someone using a phone

ago

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US / əˈgəʊ /

UK / əˈgoʊ /

A1
  • adverb
  • At a specified length of time in the past

cobalt

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US / 'kəʊbɔ:lt /

UK / ˈkoˌbɔlt /

A1
  • noun
  • Hard, shiny, silver-white metal

believe

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US / bɪ'li:v /

UK / bɪˈliv /

A1
  • verb
  • To think or accept that something is true
  • To have a particular opinion about something

kilometre

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US / ˈkɪləmi:tə(r) /

UK / ˈkɪləmiːtər /

A1
  • noun
  • A metric unit of length equal to 1000 metres

scishow

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US / /

UK / /

A1

spot

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US / spɒt /

UK / spɑt /

A2
  • noun
  • A certain place or area
  • A difficult time; awkward situation
  • Place or ranking on a list
  • A small amount of (substance help hard work etc.)
  • Mark caused by a drop of liquid, food, etc.
  • verb
  • To see someone or something by chance

way

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US / weɪ /

UK / we /

A1
  • adverb
  • Used to emphasize the amount of something
  • noun
  • Particular aspect of something being thought about
  • One of various choices that could be made
  • Particular existing condition or state
  • (Often long) distance or length of time
  • How something is done
  • Route to go to a place
  • Small street
  • Usual behavior, emotions or habits of someone

common

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US / 'kɒmən /

UK / ˈkɑmən /

A1
  • adjecitve
  • Shared; Belonging to or used by everyone
  • Typical, normal; not unusual
  • noun
  • Area in a city or town that is open to everyone
  • Field near a village owned by the local community

mineral

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US / 'mɪnərəl /

UK / ˈmɪnərəl /

B1
  • noun
  • Substance naturally formed in the ground

gush

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US / gʌʃ /

UK / ɡʌʃ /

C1
  • noun
  • Sudden flow out of large amounts of water, etc.
  • verb
  • (Of liquids) to flow out quickly

their

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US / ðɛː /

UK / ðer /

A1
  • determiner
  • Belonging to them

burst

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US / bɜ:st /

UK / bɚst /

A2
  • noun
  • Brief time period when something happens and ends
  • verb
  • To move (arrive, exit, etc.) suddenly or hurriedly
  • To break apart/open in a sudden and violent way

billion

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US / ˈbɪljən /

UK / ˈbɪljən /

A2
  • noun
  • Number 1,000,000,000

huge

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US / hju:dʒ /

UK / hjudʒ /

A2
  • adjecitve
  • Very very large

speed

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US / spi:d /

UK / spid /

A2
  • noun
  • How fast or slow something is or is done
  • verb
  • To move quickly when completing an action
  • To drive a vehicle faster than laws allow

thank

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US / θæŋk /

UK / θæŋk /

A1
  • verb
  • To tell someone you are grateful to them

look

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US / lʊk /

UK / lʊk /

A1
  • noun
  • Person's beauty or physical attractiveness
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  • To appear to be; seem

direction

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US / də'rekʃn /

UK / dɪˈrɛkʃən, daɪ- /

A2
  • noun
  • When someone tells people what to do
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mountain

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US / 'maʊntən /

UK / ˈmaʊntən /

A1
  • noun
  • Very high piece of land, higher than a hill

erupt

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US / ɪˈrʌpt /

UK / ɪˈrʌpt /

B1
  • verb
  • To begin doing something or happen suddenly
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discover

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US / dɪˈskʌvə(r) /

UK / dɪˈskʌvɚ /

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  • verb
  • To find something new that was not known before

mining

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US / ˈmaɪnɪŋ /

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B2
  • noun
  • Act of digging to get coal, gold, silver etc.
  • verb
  • To place a bomb in the ground or the sea
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rechargeable

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US / ˌriːˈtʃɑːdʒəbl /

UK / ˌriːˈtʃɑːrdʒəbl /

C1
  • adjecitve
  • Capable of being recharged

build

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US / bɪld /

UK / bɪld /

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  • noun
  • Your physical shape; physique
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  • To establish e.g. a reputation, over time
  • To construct a house, office, factory

splitting

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US / ˈsplɪtɪŋ /

UK / ˈsplɪtɪŋ /

A2
  • verb
  • To become divided or broken along a straight line
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our

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US / 'aʊə(r) /

UK / aʊr /

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  • determiner
  • Belonging to us

would

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US / wʊd /

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A1
  • other
  • Used to indicate something imagined
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interested

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US / ˈɪntrəstɪd /

UK / ˈɪntrɪstɪd, -tərɪstɪd, -təˌrɛstɪd /

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  • Having had your attention taken; curious
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  • To make someone want to know about something
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wide

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  • adjecitve
  • Having a great distance from one side to the other
  • adverb
  • Fully; completely

shark

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US / ʃɑ:k /

UK / ʃɑ:rk /

B2
  • noun
  • Person who lends money at unfair rates of interest
  • Large and dangerous fish with sharp teeth

sulfur

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US / 'sʌlfə /

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  • noun
  • Smelly yellow chemical often found near volcanoes

tall

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  • adjecitve
  • High in height

slow

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  • adjecitve
  • Lacking activity, busyness or excitement
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  • To move, with less speed than before
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but

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US / bət /

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  • Used before you say something different, opposite

tellurium

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US / teˈljʊəriəm /

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  • noun
  • Brittle silver-white metalloid element

incredibly

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US / ɪnˈkredəbli /

UK / ɪnˈkrɛdəblɪ /

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  • adverb
  • To a great degree; very; amazingly

good

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US / ɡʊd /

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  • adjecitve
  • Proper, appropriate or right
  • (Of an amount) enough; plenty
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  • Advantage or benefit

understand

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  • verb
  • To know the meaning of language, what someone says

brilliant

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  • Having a great amount of intelligence or talent
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deposit

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US / dɪ'pɒzɪt /

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  • noun
  • Concentration of mineral left by a river
  • Part payment so that an item will be kept for you
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  • (Of rivers) to leave a layer of minerals, etc.
  • To lay down of layers, e.g. of soil, over time
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cyprus

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US / ˈsaiprəs /

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  • other
  • A country on the island of Cyprus; % of the people are of Greek origin and % or Turkish origin
  • An island in the eastern Mediterranean

underground

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  • adjecitve
  • (Being or living) under the surface of the earth
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  • Secret group organized to overthrow a government
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collect

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US / kəˈlekt /

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  • adverb
  • By asking the receiver of a call to pay for it
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  • To ask for money, e.g. for a charity
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not

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US / nɒt /

UK / nɑt /

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  • adverb
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productive

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US / prəˈdʌktɪv /

UK / prəˈdʌktɪv, pro- /

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  • adjecitve
  • Producing things in large quantities; fertile
  • Doing a lot of work and achieving a lot

convert

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  • noun
  • Person switching from one belief system to another
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  • To switch from a religion, belief etc. to another
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structure

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US / ˈstrʌk.tʃə /

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  • To plan, organize, or arrange the parts of something

support

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  • noun
  • Assistance or advice given to someone
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  • To give assistance or advice to someone
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accumulate

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US / əˈkju:mjəleɪt /

UK / əˈkjumjəˌlet /

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  • verb
  • To gather or acquire so that you have more of it

candy

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US / ˈkændi /

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  • noun
  • Small sweet foods made mostly of sugar
  • verb
  • To coat food with sugar

especially

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US / ɪˈspeʃəli /

UK / ɛˈspɛʃəli, ɪˈspɛʃ- /

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  • adverb
  • More than usual; extremely

copper

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UK / ˈkɑpɚ /

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  • noun
  • Reddish-brown metal used in cables or wires

attach

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US / ə'tætʃ /

UK / əˈtætʃ /

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  • verb
  • To be associated or connected with

concentric

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US / kənˈsentrɪk /

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  • adjecitve
  • Having a common center, e.g. some circles

give

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US / ɡɪv /

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  • noun
  • Degree of flexibility in something, a material
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  • To hand over or present something to someone
  • To cause someone to have or experience something

whole

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US / həul /

UK / hol /

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  • adjecitve
  • Complete or full; all of
  • Being in a good condition
  • noun
  • Complete amount or sum; total

mine

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US / maɪn /

UK / maɪn /

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  • noun
  • A bomb hidden in the ground or the sea
  • Rich source of material or information
  • Place under the ground where coal, etc. is dug out
  • pronoun
  • That thing that belongs to me
  • verb
  • To place a bomb in the ground or the sea
  • To dig into the earth or sea to obtain minerals

can

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US / kæn /

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  • noun
  • A metal container for storing food
  • other
  • Able to; have the skill to; have the time to
  • verb
  • To have permission to
  • To be possible to do
  • To preserve food by sealing it in a metal container
  • Subtitles section
  • Thanks to Brilliant for supporting this episode of SciShow.
  • Go to Brilliant.org/SciShow to check out their Knowledge and Uncertainty course.
  • {♫Intro♫} Underneath kilometers of seawater, the ocean floor is full of riches.
  • There's gold, iron, and lots of other rare, precious metals.
  • And no, it doesn't have anything to do with pirates.
  • All this treasure is the result of millions of years of geochemical processes that have been steadily filling the seafloor with loot.
  • Some of the most impressive deposits grow at hydrothermal vents, which are hot springs at the bottom of the ocean.
  • These vents form along mid-ocean ridges, where Earth's tectonic plates are splitting apart, and lava rises up through the gap, then hardens into long underwater mountain chains.
  • At these spots, seawater seeps into cracks in the ocean crust and collects underground, where it gets heated by magma and bursts out through the vents.
  • But it's not pure seawater that comes back out.
  • The whole time it's underground, the hot seawater is leaching metals from the surrounding crust, which is full of huge amounts of sulfur, along with metals including copper, gold, zinc, lead, and silver.
  • So when that hot water gushes back out from the vent, it interacts with the cold water around it, and all those dissolved metals precipitate back out of the liquid.
  • Over time, they form tall, chimney-like structures that rise up around the vent.
  • Sometimes the chimneys are called white or black smokers because the erupting fluids full of minerals look like smoke rising out of the towers, but the whole accumulations are known more formally as massive sulfide deposits.
  • These can only form under the ocean, but these days, when we mine for zinc, copper, or silver on land, we're often mining massive sulfide deposits that originally formed on the ocean floor millions of years ago.
  • It's just that, since then, they've ended up above sea level thanks to the shifting of tectonic plates.
  • For example, the island of Cyprus has 30 of these massive sulfide deposits that were once under the sea, and that's where the Ancient Romans got their copper.
  • Unlike hydrothermal vents, though, some underwater deposits accumulate much more subtly, such as the ones that grow on exposed ridges, plateaus, and underwater mountains left behind by extinct volcanoes.
  • As seawater comes in contact with these surfaces, metals dissolved within it precipitate out to form a crust over the rocks.
  • It all starts when iron and manganese oxides latch on to the rock.
  • They're prone to chemical reactions and have a lot of surface area, which makes them especially sticky as far as chemicals go.
  • So they'll glom on to any exposed rock surface.
  • Then, once these compounds build up enough, they form a sponge-like network that traps other metals from the seawater in the pores.
  • Seawater itself has pretty low concentrations of metals, but as those metals collect on exposed surfaces, they can reach concentrations 1 billion times higher than in the ocean.
  • These so-called cobalt-rich crusts contain metals like cobalt, iron, and manganese, as well as rare earth metals like tellurium and platinum.
  • And depending on the strength and direction of the ocean currents, the crust can form just a glaze, or it can grow to about 25 centimeters thick.
  • But these crusts grow incredibly slowly.
  • Every million years, they accumulate just one to 10 millimeters.
  • It's one of the slowest processes on Earth.
  • Finally, the last process we're going to look at in our tour of the seafloor produces what might be the oddest of our ocean treasures: a potato-shaped clump made of minerals containing manganese, iron, and smaller amounts of other metals.
  • These lumpy rocks are known as manganese nodules, and they grow in underwater fields more than 3500 meters below the surface.
  • Each nodule gets its start as a piece of debris, like a shark tooth or a pebble, that serves as a nucleus.
  • Then, little by little, manganese and iron oxides attach to this debris just like they attach to exposed rock.
  • And over millions of years, the metals grow in concentric rings, kind of like a jawbreaker candy.
  • All this iron and manganese comes from seawater and also from liquids that squeeze out from pores in the sediments beneath the rocks.
  • Scientists think that the nodules also get a little help from special bacteria that live on them.
  • They believe these microbes speed up the process by taking manganese from the seawater, converting it to manganese oxide, and depositing it on the clump.
  • These odd treasures were discovered in 1873, during the first-ever worldwide oceanographic expedition.
  • The crew of that expedition dragged up a few lumpy rocks from the seafloor and were surprised to find that they were big hunks of manganese oxide.
  • Today we know that there are thousands of square kilometers of these nodules growing on the seafloor, and they contain more manganese than there is anywhere on land.
  • Since their discovery, these seafloor treasures have generated a lot of interest, both from scientists and mining companies.
  • Many of these metals are in short supply on land, but are in demand for manufacturing high-tech electronics, like cell phones and rechargeable batteries.
  • But since the ore lies beneath hundreds of meters of water, no one is mining these deep sea treasures—yet.
  • Which is a good thing, because we don't fully understand how that would alter seafloor ecosystems, or the larger ocean environment.
  • After all, as common as they are, the ocean floor has been growing these treasures for millions of years, so we know they don't come easy, which gives us all the more reason to protect them.
  • There's still so much to learn about what goes on under the ocean, and sometimes it can feel overwhelming when you realize just how much we don't understand.
  • But if you've ever felt that way, you might enjoy Brilliant's course on Knowledge and Uncertainty.
  • You can learn how to put a number on uncertainty—and how to minimize it.
  • Brilliant also has a wide selection of other courses in science, engineering, math, and computer science, and if you've been looking for a new, productive way to spend your time at home, you can see what Brilliant has to offer.
  • And if you're one of the first 200 people to sign up at Brilliant.org/SciShow, you'll get 20% off an annual Premium subscription.
  • So check it out if you're interested, and as always, thanks for watching SciShow.
  • {♫Outro♫}